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Microsoft 365 Security Assessment

Microsoft 365 is a mission‑critical platform for email, collaboration, identity, and data storage and one of the most targeted environments by threat actors. While Microsoft includes powerful security capabilities, many are not enabled or securely configured by default, leaving organizations exposed to account takeover, data leakage, and compliance risk.

An SBS CyberSecurity Microsoft 365 Security Assessment provides a comprehensive, expert‑led review of your Microsoft 365 tenant to identify misconfigurations, reduce attack surface, and align your environment with industry‑recognized security best practices.


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What Is a Microsoft 365 Security Assessment?

A Microsoft 365 Security Assessment is a focused security configuration review of your Microsoft 365 tenant. SBS CyberSecurity evaluates your environment against industry best practices, including the CIS Microsoft 365 Foundations Benchmark and Microsoft security guidance, to identify high‑risk settings and improvement opportunities.

This is not an automated checklist or penetration test. Our approach combines technical validation with business context to ensure recommendations are practical, prioritized, and defensible.

M365 Security Assessment

Why Microsoft 365 Security Matters

Microsoft 365 environments are often compromised due to misaligned or inconsistently applied configurations across services, not a lack of tools. A hardening assessment helps identify and remediate gaps such as:
Weak Passwords
Weak identity and authentication controls
Business Email Compromise
Inadequate protection against phishing and business email compromise
Data Leaks
Overly permissive sharing and external access
Logging and Auditing Issues
Insufficient logging, alerting, and audit retention
Security Gaps
Gaps between Microsoft Secure Score and actual risk reduction

What We Review

Our assessment evaluates security configurations across key Microsoft 365 workloads, including:

Identity & Access Management (Microsoft Entra ID)

Multifactor authentication enforcement


Conditional access policies


Privileged role management


Legacy authentication exposure


External and guest user controls

Email & Collaboration Security

Exchange Online mail flow and antiphishing protections


Defender for Office 365 configuration


Safe Links and Safe Attachments


User‑reported phishing and response workflows


Data Protection & Sharing Controls

SharePoint and OneDrive sharing settings


External access and guest permissions


Sensitivity labels and data handling controls


Teams external and federated access

Logging, Monitoring & Auditing

Unified audit logging


Alerting and investigation readiness


Log retention and visibility gaps


Security signal integration readiness

What This Assessment Provides

As part of this assessment, you receive:
An executive‑level summary of overall Microsoft 365 security posture
Detailed findings mapped to best‑practice benchmarks
Risk‑ranked remediation recommendations
Clear explanation of why each issue matters
A practical roadmap to improve security without unnecessary tools
Optional follow‑up support for remediation guidance or validation

Who This Assessment Is For

This assessment is designed for organizations that:
Rely heavily on Microsoft 365 for daily operations
Have experienced phishing, account takeover, or email compromise
Need defensible security configurations for audits, regulators, or cyber insurance
Are unsure whether current M365 settings match today's threat landscape

Our Assessment Methodology

SBS CyberSecurity takes a hands‑on, expert‑driven approach to Microsoft 365 hardening.

1
Scoping & Access
We define the assessment scope and review your environment using read‑only administrative access.
2
Configuration Review
Our specialists validate configurations against security benchmarks and Microsoft recommendations.
3
Risk Analysis
Findings are prioritized based on likelihood, impact, and real‑world attack patterns.
4
Reporting & Guidance
You receive clear, actionable recommendations instead of generic settings lists.

Frequently Asked Questions

What is the purpose of a Microsoft 365 security assessment?

An SBS Microsoft 365 Security Assessment evaluates your organization's M365 environment for vulnerabilities, misconfigurations, and potential security risks. The audit identifies gaps in security settings and provides tailored recommendations to enhance the overall security posture. By conducting a thorough review, you ensure your organization's data and operations are protected from emerging cyber threats.

How often should we perform a Microsoft 365 security assessment?

It's recommended to perform a Microsoft 365 security assessment at least once a year or whenever significant changes are made to your environment, such as adding new services, changing user roles, or implementing third-party applications. Regular audits help ensure your security settings remain effective against evolving threats and that your compliance standards are up to date.

What does SBS CyberSecurity's Microsoft 365 Security Assessment include?

Our assessment includes a comprehensive review of security controls, including secure user accounts, login and monitoring, threat management, data loss prevention, and mobile device management (MDM). We evaluate your security settings, identify any vulnerabilities or misconfigurations, and provide actionable recommendations aligned with industry best practices, such as NIST and CIS standards.

How long does a Microsoft 365 security assessment typically take?

The duration of the assessment depends on the size and complexity of your Microsoft 365 environment. Typically, a full assessment can take a few days to a couple of weeks. After completing the audit, we deliver a detailed report with prioritized recommendations and work with your team to implement the necessary improvements.

Can SBS CyberSecurity help with implementing the recommended changes after the assessment?

Yes, SBS CyberSecurity not only provides a detailed report with prioritized recommendations but also works closely with your team to implement the necessary security measures. Our consultants offer expert guidance to ensure your Microsoft 365 environment is properly secured, and we provide ongoing support to address any issues that arise during or after the implementation process.

What are the most common security risks in Microsoft 365 environments?

Common security risks in Microsoft 365 environments include misconfigured access permissions, a lack of multifactor authentication, improper data loss prevention settings, and inadequate monitoring of user activity. Without addressing these vulnerabilities, your organization is more susceptible to phishing attacks, data breaches, and unauthorized access.

Why should we choose SBS CyberSecurity for our Microsoft 365 security assessment?

SBS CyberSecurity brings years of cybersecurity experience and specializes in tailored solutions for Microsoft 365 environments. Our experts not only identify vulnerabilities but also provide clear, understandable guidance to implement security improvements effectively. We work as your partners throughout the entire process, ensuring your environment is not just secure but optimized for long-term resilience.

Get Expert Guidance for Microsoft 365 Hardening

If you are ready to improve your Microsoft 365 security posture, SBS CyberSecurity can help. Submit the form to speak with our team about identifying misconfigurations, strengthening key controls, and receiving clear, actionable recommendations tailored to your environment.